论文摘要
This study determined the optimal concentration of titanium diboride（TiB2） particles for the development of in situ titanium–titanium boride（Ti–TiB） metal matrix composites（MMCs） prepared by a conventional powder metallurgy route to be used for industrial applications. The effect of concentration of TiB2 particles was studied by reinforcing TiB2 powder in different mass fractions（2 wt%, 5 wt%, 10 wt%, and 20 wt%） into pure Ti powder during the fabrication process. The MMCs were sintered at high temperatures under vacuum. The transmission electron microscopy（TEM） results revealed the formation of needle-shaped TiB whiskers, indicating that in situ reaction occurred during vacuum sintering of the powder compacts. All the composite samples had a high sintered density, and the hardness of the composites increased with an increase in the mass fraction of reinforcement. Mechanical and tribological properties such as flexural strength, impact, and wear properties were determined and found to be dependent on the mass fraction of the reinforcement. However, the mechanism for the in situ reaction needs further investigation by high-energy in situ X-ray diffraction techniques.
论文目录
文章来源
类型: 期刊论文
作者: Harshpreet Singh,Muhammad Hayat,Hongzhou Zhang,Raj Das,Peng Cao
来源: International Journal of Minerals Metallurgy and Materials 2019年07期
年度: 2019
分类: 工程科技Ⅱ辑,工程科技Ⅰ辑
专业: 材料科学
单位: Department of Chemical and Materials Engineering, University of Auckland,Sir Lawrence Wackett Aerospace Research Centre, School of Engineering, RMIT University
基金: partially supported by the Titanium Technologies New Zealand (TiTeNZ) Programme funded by the Ministry of Business Innovation and Employment (MBIE),New Zealand
分类号: TB33
页码: 915-924
总页数: 10
文件大小: 7945K
下载量: 29
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